Butene-1 polymer composition having a high melt flow rate

A butene-1 polymer composition comprising:

• A) a butene-1 homopolymer or a copolymer of butene-1 with a comonomer selected from the group consisting of ethylene and higher alpha-olefins, having a copolymerized comonomer content (CA) of up to 5% by mole;
• and
• B) a copolymer of butene-1 with a comonomer selected from the group consisting of ethylene and higher alpha-olefins, having a copolymerized comonomer content (CB) of from 6% to 20% by mole;
• wherein the composition has a MFR from 400 to 2000 g/10 min, measured according to ISO 1133 at 190° C. with a load of 2.16 kg, and has an intrinsic viscosity, measured in tetrahydronaphthalene at 135° C., of lower than 0.6 dl/g,
• wherein the composition has a total copolymerized comonomer content from 4% to 15% by mole referred to the sum of A) and B), and has a content of fraction soluble in xylene at 0° C. of 60% by weight or less determined on the total weight of A) and B).